78 results about "Projection angle" patented technology

The invention discloses an image enhancement processing method and system for an unmanned aerial vehicle monitoring video stream, and relates to the technical field of data processing, and the method comprises the steps: responding to a triggering instruction that an unmanned aerial vehicle enters a hovering verification state, extracting a current exposure line index, and resolving a target light beam projection angle corresponding to the current exposure line index, generating a scanning driving signal based on the linkage mapping relation of the two, performing line-by-line scanning exposure, and limiting the space coverage range of the physical projection light beam in a physical space slice corresponding to a pixel line which is currently in an exposure opening state, so that environmental near-field suspended particles outside the physical space slice are kept in a non-illumination state; and collecting the optical signal reflected by the physical space slice, and generating an enhanced video frame for suppressing near-field scattering interference. According to the application, the airborne linear light source and the exposure line are synchronously scanned, and the light beam coverage range is strictly limited in the physical space slice corresponding to the current exposure line, so that the near-field dust does not generate scattered light because the near-field dust is not illuminated.

The utility model belongs to the field of projector supports, and particularly relates to a liftable and rotatable data visualization projector support, which comprises a projector mounting plate and a projector fixing bolt, the projector fixing bolt is fixed in the middle of the upper surface of the projector mounting plate, and a supporting cylinder is arranged at the bottom of the projector mounting plate. A lifting rod is movably inserted into an inner cavity of the supporting cylinder. A first gear box is mounted at the top of the supporting cylinder, and a second gear box is mounted at the top of the lifting rod; triangular supporting frames are annularly arranged at the bottom of the supporting cylinder, screw holes are formed in the bottoms of the triangular supporting frames in a penetrating mode, adjusting screw rods are in threaded connection with the interiors of the screw holes, and self-locking universal wheels are rotationally connected to the bottoms of the adjusting screw rods. According to the novel projector, the height and the horizontal irradiation angle are flexibly adjusted, the worm gear and the worm are matched to achieve self-locking performance, the lifting rod and the projector mounting plate can be locked, the projector is more stable in use, and the projection angle and height of the projector are more accurately adjusted.

The application provides a quick assembly type projector, and belongs to the field of projectors, which comprises a host computer, a bottom plate and a mounting frame, the host computer comprises a machine body shell, a projection main body is movably connected to the side of the machine body shell, and heat dissipation grilles are evenly arranged on the side of the machine body shell, the design of the storage groove and the sealing cover plate enables users to conveniently store small objects such as remote controllers and prevents loss. In addition, the design of the power socket and the isolation cover plate ensures the safety of electricity use and avoids the entry of dust and sundries. Through the modular and standardized design concept, the projector realizes quick splicing and fixing between the host computer, the bottom plate and the mounting frame. Users can easily complete the assembly work of the projector without the help of professional tools, which greatly saves time and cost. Meanwhile, through the design of the adjusting motor and the steering top plate, users can conveniently adjust the projection angle and height to meet the use requirements in different scenes.

A system receives a set of two-dimensional projection images associated with respective projection angles from an imaging device. The projection images include projections of an anatomical structure, an anatomical target, and possibly fiducial markers, with a flexible elongate device disposed therein. The system can reconstruct a three-dimensional image from the set of two-dimensional projection images. In some examples, prior to reconstruction, the system can detect and repair pixels (within the projection images) associated with the fiducial markers, the flexible elongate device, and / or other objects. The system can enhance the reconstruction using a style transfer model. The system or another system can train the style transfer model by generating two-dimensional projections for a training set based on three-dimensional ground truth images.

This invention provides a proton imaging method and imaging device, applicable to the fields of proton imaging technology and signal processing technology, particularly in the field of particle radiation imaging technology. The method includes: determining a virtual source position based on an initial two-dimensional dose distribution of a proton beam acquired without an imaging object; obtaining multiple sub-beam propagation paths from the virtual source position to the multiple predetermined sub-beam center positions based on the virtual source position and multiple predetermined sub-beam center positions on a predetermined plane; obtaining sub-beam data pairs corresponding to the sub-beam propagation paths and the two-dimensional dose distribution based on the two-dimensional dose distribution and the lateral distribution components determined along the sub-beam propagation paths; obtaining multiple water equivalent path lengths corresponding to at least one projection angle through an iterative algorithm based on the multiple sub-beam data pairs corresponding to at least one projection angle; and performing image reconstruction based on the multiple water equivalent path lengths corresponding to at least one projection angle to obtain a target image of the imaging object.

The present disclosure provides an image reconstruction method, device, electronic equipment and storage medium, the image reconstruction method comprising: acquiring a compressed image of a detection object with respect to a projection plane; processing at least one of two-dimensional position information, texture information and depth information included in the compressed image based on a conversion relationship to obtain three-dimensional information, the conversion relationship being determined according to extreme position information of the two-dimensional position information with respect to the projection plane or a projection angle of the two-dimensional position information with respect to the projection plane; and generating point cloud data of the detection object according to a plurality of three-dimensional information.

The invention relates to a geometric parameter estimation method for cone-beam CT, belongs to the technical field of cone-beam computed tomography, and solves the problems of high cost and low efficiency of a technical scheme for determining geometric parameters of cone-beam CT in the prior art. The geometric parameter estimation method comprises the following steps: extracting same preset sampling lines from projection images at all projection angles to obtain sinograms corresponding to all the preset sampling lines; determining a first transverse offset of each preset sampling line according to the sinogram corresponding to each preset sampling line, and performing linear fitting based on the first transverse offset of each preset sampling line to obtain a torsion angle of the cone beam CT; and performing rotation correction on the projection images at each projection angle by using the torsion angle of the cone beam CT, extracting a sinogram corresponding to the center line from the projection images at each projection angle after rotation correction, and taking the transverse offset of the center line as the transverse offset estimation value of the cone beam CT. And the geometric parameters of the cone beam CT can be quickly estimated.

The utility model discloses a kind of suspension type multidimensional adjustable projectors, including projector and inverted recess type frame, the middle part of the outer surface of the front end of projector is provided with lens, the middle part of the outer surface of inverted recess type frame upper end is installed with projection direction adjusting assembly, the side of projection direction adjusting assembly is provided with dustproof structure, the bottom of the outer surface of inverted recess type frame right side is installed with projection angle adjusting assembly, the middle part of the outer surface of projector left end is fixedly installed with first driven shaft, and the first driven shaft is connected with inverted recess type frame left lower portion. The utility model is projected by the projection angle adjusting assembly of being set, the angle of projector is conveniently adjusted, the projection direction adjusting assembly of being set is conveniently adjusted, the direction of projector is projected, the dustproof structure of being set is conveniently protected lens when projector is not used, reduce the accumulation of dust.

The invention provides an image correction method and a double-projection imaging system, and relates to the technical field of images, in particular to the technical field of image correction. According to the method, a first projection image and a second projection image of a target object under a target projection angle can be acquired, scattering correction is performed on the first projection image, and a corrected image under the target projection angle is determined based on the first projection image after scattering correction and the second projection image of the target object under the target projection angle. Wherein the target projection angle is a projection angle within a target projection angle range, the first projection image comprises a shadow area formed after shielding of the first BSA, and the target projection angle range is a projection angle range where the first projection group and the second projection group are overlapped. According to the method, the phenomenon of shielding artifacts of the image in the reconstruction process can be effectively reduced.

A depth data measuring head (600, 700) comprising: a structured light projection apparatus (110, 610, 710) used for projecting, under the drive of a driving apparatus (114, 314) and at different projection angles, a beam having a texture to a measured space so as to form different textures on an object to be measured; and first and second image sensors (620, 630; 720, 730) that are respectively arranged on both sides of the structured light projection apparatus (110, 610, 710), the first and second image sensors having a predetermined relative spatial position relationship and imaging the measured space at least twice so as to obtain at least two sets of images having different texture distributions, wherein the at least two sets of images are used for obtaining single-measurement depth data of the object to be measured. The structured light projection apparatus (110, 610, 710) that reflects, at different angles, structured light generated by a light source module (I) is used, so that rapid, economical and low-failure-rate multi-pattern projection is implemented. Furthermore, the structured light projection apparatus (110, 610, 710) matches multiple pairs of binocular sensors (723, 724; 733, 734) sharing a light path, thereby further shortening the frame interval and improving the quality of depth fusion data. Also disclosed is a depth data computing device and measurement method.

The invention relates to a scanning dose adaptive modulation method and device, electronic equipment and a readable medium, and the method comprises the steps: carrying out the normal position positioning phase scanning of a scanning object, and obtaining a positioning phase image of a scanning region; determining the equivalent diameter of each Z position in the Z direction according to the positioning phase image, and integrating each equivalent diameter into an equivalent diameter sequence; the number of scanning turns is obtained, the equivalent diameter sequence is averagely segmented according to the number of scanning turns, and the average equivalent diameter of each turn is obtained; substituting each average equivalent diameter into a gear-scanning dose modulation formula to obtain each dose control parameter, and generating a Z-direction dose modulation curve according to each dose control parameter; and correcting the Z-direction dose modulation curve along the XY plane based on the attenuation intensity of each projection angle so as to adaptively modulate the scanning dose of the scanning object through the corrected Z-direction dose modulation curve. The problem that the noise uniformity is poor in the Z-axis direction and at different scanning angles during CT dose modulation is solved.

The utility model discloses a projector support link rotation device, including projector shell (7) and base support (4), base support (4) rotates and is installed on projector shell (7), is used for the bottom support of projector shell (7), projector shell (7) can be adjusted to any projection angle relative to base support (4);Base support (4) with between projector shell (7) is provided with pivot piece (5), pivot piece (5) passes through projector shell (7) with base support (4), and is locked with its through a rotation -stopping nut (1). The utility model can realize the adjustment of any angle of up and down direction, and through the design of wear -resisting friction piece and rotation -stopping nut has strengthened the service life and stability of device, and simultaneously, the device structure is relatively simple, and the installation and operation are more convenient.

The invention discloses a bending degree testing method and device for glasses, electronic equipment and a medium, and the method comprises the steps: obtaining projection information of the glasses under a set opening degree; wherein the set opening degree comprises at least three opening degrees, and the projection information comprises projection length information and projection angle information of the glasses; according to the projection length information, determining whether the projection length information satisfies a preset condition; and under the condition that the projection length information meets the preset condition, taking the projection angle information as a bending degree test result of the glasses.

The invention relates to an image reconstruction method based on a projection image, belongs to the technical field of cone beam computed tomography, and solves the problem of low quality of a target reconstruction image caused by the change of CBCT parameters in the prior art. The image reconstruction method comprises the following steps: acquiring projection images of a target object at each projection angle by using CBCT, and determining object areas of the projection images of the target object at each projection angle by using an edge detection method; estimating CBCT parameters according to the object areas of the projection images of the target object at each projection angle to obtain a torsion angle and a transverse offset of the CBCT; and reconstructing the target object by combining the projection images of the target object at each projection angle according to the torsion angle and the transverse offset of the CBCT to obtain a target reconstruction image. And the image precision of target object reconstruction by using CBCT is improved.

Embodiments of the present application provide a 3D camera and a debugging method and device, a storage medium and a program product. An industrial computer acquires a point cloud diagram collected by a laser line scanning structured light camera (3D camera) based on a current laser projection angle and a corresponding depth diagram. In response to a laser debugging operation, the industrial computer determines a target laser projection angle according to a to-be-debugged position marked in the depth diagram and camera calibration parameters, sends control information including the target laser projection angle to the laser line scanning structured light camera to control the laser line scanning structured light camera to project a laser line based on the target laser projection angle, so that the laser line can cover the to-be-debugged position, and the point cloud imaging effect of an area where the to-be-debugged position is located can be accurately improved. The user does not need to manually and repeatedly adjust camera parameters, the efficiency and accuracy of 3D camera debugging can be improved, and thus the point cloud imaging effect is improved.

The utility model relates to the technical field of lamp positioning, in particular to a lamp projection angle positioner which comprises a positioning module, the positioning module is provided with a limiting module and comprises a mounting disc, an adjusting seat and a mounting seat, and the adjusting seat is provided with a second arc-shaped groove and two first arc-shaped grooves. And the mounting plate is spirally connected with two positioning screws I penetrating through the adjacent arc-shaped grooves I. According to the utility model, the mounting disc and the adjusting seat are both provided with scales, so that the adjusting seat can rotate relative to the mounting disc as required, the mounting seat can rotate relative to the adjusting seat, and the angle of the mounting seat can be known through the indication of the scales on the mounting disc by the indication block I and the indication of the scales on the adjusting seat by the indication block II; the angle of the mounting base in the horizontal direction and the vertical direction relative to the mounting disc can be accurately adjusted, the difference between the angle of the lamp and the designed angle can be easily reduced, and the lamp can be conveniently and accurately mounted.

The present disclosure provides an image compression method, device, electronic equipment and storage medium, the image compression method comprising: acquiring point cloud data of a detection object; processing a plurality of three-dimensional information included in the point cloud data respectively based on a conversion relationship to obtain at least one of two-dimensional position information, texture information and depth information, the conversion relationship being determined according to extreme position information of the point cloud data relative to a projection plane or a projection angle of the three-dimensional information relative to the projection plane; and generating a compressed image of the detection object for the projection plane according to at least one of the two-dimensional position information, the texture information and the depth information.

The invention provides a method based on octagonal space projection and mirror surface wireless reflection. The method comprises the following steps: S1, constructing an octagonal space structure according to a preset size and a preset angle; s2, mounting projection equipment, and adjusting the projection angle and distance of the projection equipment according to the size and position of each projection wall surface to ensure that a projection picture can completely cover the corresponding wall surface; s3, based on a perspective correction algorithm calibrated by a camera, carrying out geometric adjustment on the projection picture of each projection device, eliminating perspective deformation, and enabling the picture of each projection wall to keep geometric consistency; s4, color unified adjustment is carried out based on a color calibration method of white balance adjustment and color gamut matching; and S5, performing fusion processing on picture overlapping areas existing in adjacent projection wall surfaces by adopting an edge feathering technology to realize seamless connection of projection wall surface pictures. According to the method, the defects of the technology of combining multi-surface projection with mirror reflection in space structure design and multi-channel projection fusion are overcome, and the visual effect of an immersion space is improved.

The invention discloses a pipeline steel pipe inner wall defect detection device and method based on variable structure light. According to the device, a propelling rotating unit arranged in the center of a main body support drives the device to axially advance in a steel pipe through a propelling mechanism and a guide wheel, and a detection and control unit arranged at the front end is driven to rotate through a rotating mechanism; the variable structure light projection unit outputs multiple groups of variable structure light based on projection parameters including polarization directions and emergent angles; and the curve data communication unit uploads a plurality of groups of structured light images formed on the inner wall by the plurality of groups of variable structured light collected by the line-scan digital camera to an external server so as to identify and position the defects of the inner wall. Therefore, the polarization state and the space projection angle of the structured light can be dynamically adjusted, the mirror reflection of the inner wall is effectively inhibited, the detection shadow is eliminated, the defect contrast is enhanced, high-precision and automatic defect identification and quantification are realized, and the dependence on the experience of operators is reduced.

The invention discloses a multi-axis linkage adjustable clothing projection device which comprises a workbench, supporting legs are fixedly connected to the four corners of the bottom end of the workbench respectively, one end of the top of the workbench is fixedly connected with the bottom end of a lifting assembly, and the top end of the lifting assembly is fixedly connected with the middle of the bottom end of a transverse moving assembly. The end of one side of the transverse moving assembly is fixedly connected with one end of an angle adjusting mechanism, the other end of the angle adjusting mechanism is fixedly connected with a clamping module, a projector body is fixedly clamped in the clamping module and arranged on the top of the workbench, and a control panel is fixedly installed at one end of the lifting assembly. The lifting assembly is matched with the transverse moving assembly, the height and the projection position of the projector body are adjusted, through the design, the projection position and the coverage range of the projector can be flexibly adjusted according to actual requirements in the working process, and it is ensured that the projection effect accurately covers a clothing display area; and due to the arrangement of the angle adjusting mechanism, multi-angle adjustment of the projection angle of the projector body is realized.

The utility model provides a multi-adjustability projection device for enterprise management, which relates to the technical field of projection devices and comprises a base, the upper surface of the base is provided with a groove, a sealing bearing is fixedly embedded in the groove, the inner ring of the sealing bearing is fixedly connected with a rotating rod, and the top end of the rotating rod is fixedly connected with a rotating disc. According to the multi-adjustability projection equipment for enterprise management, firstly, two rotating bearings, two connecting rods and a rotating ring are arranged, and the two rotating bearings, the two connecting rods and the rotating ring are utilized to drive the projection equipment body to rotate front and back, so that a worker can conveniently adjust the projection angle of the projection equipment body; and then a sealing bearing and a rotating rod are arranged, and the sealing bearing and the rotating rod can drive a rotating disc to rotate, so that the rotating disc can drive the projection equipment body to rotate left and right, and a worker can conveniently adjust the projection position of the projection equipment body.

The application relates to an electronic device and an organ contour acquisition method, and relates to the technical field of medical display. The application comprises the following steps: in response to a selection instruction triggered by a user, determining target three-dimensional image data of a target organ selected by the selection instruction; wherein a three-dimensional image formed by the target three-dimensional image data matches a part of the target organ that can be directly shot by a camera; for each projection angle, rendering the target three-dimensional image data on a preset rendering window according to the projection angle to obtain a projection image on the rendering window; and determining a contour of the target organ corresponding to the projection angle according to the projection image on the rendering window, so as to realize calibration of the target organ according to the contour corresponding to each projection angle and the target organ shot by the camera. Since the application can obtain a two-dimensional image at any angle through a three-dimensional image and then perform contour extraction, the calibration of the target organ can be more accurate, and the calibration accuracy is improved.

A wearable apparatus and a projection method therefor. The method comprises: acquiring a projection reference distance; determining a scanning angle, wherein the scanning angle is an angle formed between a projection ray and a straight line on which the projection reference distance lies, as the projection ray rotates from the straight line towards a side of a region to be projected until the projection ray is no longer obstructed; determining a projection angle on the basis of the projection reference distance, a preset maximum projection distance and the scanning angle; determining a projection distance on the basis of the projection angle; and performing projection on the basis of the projection angle and the projection distance.

The invention discloses a self-adaptive temperature field measuring device and method for a dynamic arc. The device comprises an arc generating mechanism, an image collecting device, a reflecting mirror set, an angle reference component and a processing unit. The angle reference component is installed on the arc generation mechanism, the central axis is coaxial with the geometric installation axis of the arc generation mechanism, and an angle scale structure is arranged on the surface and used for establishing the mapping relation between the pixel position and the observation angle. The reflector group is arranged on the side of the arc generation mechanism and is used for reflecting radiation light from different directions of the dynamic arc to the same image acquisition device so as to realize multi-view imaging; the processing unit determines the projection angle of each visual angle in real time in the dynamic discharge process, performs tomography reconstruction based on multi-visual-angle radiation information, obtains emission coefficient distribution of an arc section, adaptively distinguishes a high-temperature region from a low-temperature region according to isoline topological characteristics, performs temperature mapping, and realizes accurate reconstruction of a dynamic arc temperature field. And the stability and reliability of measurement under the dynamic working condition are improved.

The present invention is to solve the problem that the deformation of the workpiece surface can be automatically determined without the reference shape data of the workpiece. In order to solve the above problem, a workpiece quality determination system determines the quality of a workpiece based on a fringe pattern projected onto the workpiece surface, and includes: an observation angle setting section that sets an observation angle for observing a projected fringe pattern projected onto the workpiece; a fringe projection angle setting section that sets a fringe projection angle of the projected fringe pattern at the set observation angle; a reference fringe creating section that creates a reference fringe pattern based on the projected fringe pattern at the set fringe projection angle; and a quality determination section that calculates a difference between the projected fringe pattern and the reference fringe pattern at the fringe projection angle, and performs quality determination based on the difference.

The invention discloses an image reconstruction method, a double-projection imaging system and electronic equipment, relates to the technical field of medical treatment, is used for optimizing the image reconstruction effect, reducing the influence of blocking artifacts and being capable of improving the medical image reconstruction quality, and comprises the following steps: obtaining a projection image of a target object; the projection image of the target object is a projection image comprising a light beam blocking area; the projection image of the target object comprises a first projection image and a second projection image; projection angles of the first projection image and the second projection image are not overlapped, and light beam blocking areas in the first projection image and the second projection image are not overlapped; performing weighting processing on the projection image to obtain a weighted projection image; and performing back projection processing on the weighted projection image to obtain a reconstructed image of the target object.

This product is a projector stand that allows you to adjust the projection angle of the projector, as shown in perspective diagrams 1-4 illustrating the state of use.

The utility model discloses sheet material positioning device, including frame body part, projector support part, projection equipment, frame body part is fixed on the ground, and frame body part is fixed in the non-interference position near the trolley, and projector support part is connected with frame body part upper portion, and projection equipment is connected with projector support part, and projection equipment can move along with projector support part before and after, left and right, and the projection angle of projection equipment can swing around projector support part before and after, realizes the position adjustment and projection angle adjustment of projection equipment on projector support part before and after, left and right, the utility model discloses the position information of projection equipment is projected to the trolley rack with sheet material, replaces the mode of sheet material template positioning or manual scribing in the conventional sheet material unstacking operation through the image projection mode, saves sheet material resources, reduces the input cost, and the worker does not need to frequently change sheet material template or scribe, reduces the working strength, improves the automation level.

The application discloses a high-speed CT intelligent image reconstruction method for transient detection, which is applied to a distributed multi-source transient CT imaging system, acquires sparse angle projection data of multiple fixed X-ray sources under different projection angles, and constructs a linear imaging system equation; an accelerated random differential equation framework is constructed, multi-scale dynamic modeling is carried out by introducing an integer scale index, and time resolution and noise intensity are decoupled; a quasi-equivalent Markov chain solver is used for image reconstruction sampling, and the sampling process is sequentially divided into a non-Markov bridge stage, a link path stage and a Markov bridge stage; after each sampling step, a data consistency constraint is applied to correct the sampling state, and a reconstructed image is obtained; and the application effectively suppresses stripe artifacts under the condition of extremely sparse viewing angles by means of multi-scale decoupling and a three-stage sampling strategy, and ensures the image reconstruction quality.

The utility model provides an angle-adjustable wire alignment device for a bending machine. The angle-adjustable wire alignment device comprises a supporting plate; the guide rail is fixedly mounted at the top of the supporting plate; a sliding groove is formed in the top of the guide rail in the length direction of the guide rail, the guide rail is sleeved with the sliding block, the sliding block is slidably connected with the sliding groove, and a first positioning rod abutting against the guide rail penetrates through one side of the sliding block in a threaded mode in the horizontal direction; the connecting part is mounted at the top of the sliding block; the angle adjusting component is mounted on the connecting component, and a mounting plate is mounted at the top of the angle adjusting component. According to the utility model, when the inclination angle of the laser projection alignment device needs to be adjusted according to plates with different processing sizes, the inclination direction of the mounting plate is adjusted through the angle adjusting part, so that the projection angle of the laser projection alignment device can be adjusted; the mode that a supporting plate is detached to adjust the projection angle of the laser projection alignment device and then the laser projection alignment device is fixed is replaced, overall operation is easy and convenient, the difficulty of adjusting the inclination angle of the laser projection alignment device is lowered, and efficiency is improved.